The SimpleLink SDKs provide peripheral driver and WiFi libraries and hardware register access header files for the Texas Instruments SimpleLink SoCs. For an explanation of the SimpleLink family SDK directory structure, see: http://dev.ti.com/tirex/content/simplelink_cc32xx_sdk_2_40_01_01/docs/simplelink_mcu_sdk/Users_Guide.html#directory-structure 1. CC13x2/26x2 SDK The current version supported in Zephyr is the SimpleLink CC13x2 and CC26x2 SDK 4.40.04.04, downloaded from: http://www.ti.com/tool/simplelink-cc13x2-26x2-sdk The driver library source is copied from the SDK, as follows: EXT_DIR=$HOME/hal_ti/simplelink/source/ti pushd simplelink_cc13x2_26x2_sdk_4_40_04_04/source/ti find devices/cc13x2_cc26x2/{driverlib,inc,rf_patches} -depth -name '*.[c|h]' -print0 | cpio --null -pvdm $EXT_DIR find devices/cc13x2_cc26x2/startup_files -depth -name ccfg.c -print0 | cpio --null -pvd $EXT_DIR cp -r drivers/power/* $EXT_DIR/drivers/power/. mkdir $EXT_DIR/drivers/temperature cp -r drivers/temperature/* $EXT_DIR/drivers/temperature/. cp drivers/Temperature.* $EXT_DIR/drivers/. mkdir $EXT_DIR/drivers/rf cp drivers/rf/RF.h $EXT_DIR/drivers/rf/. cp drivers/rf/RFCC26X2.h $EXT_DIR/drivers/rf/. cp drivers/rf/RFCC26X2_multiMode.c $EXT_DIR/drivers/rf/. find $EXT_DIR/devices/cc13x2_cc26x2 -name '*.[c|h]' -exec dos2unix {} \; find $EXT_DIR/drivers/power -name '*.[c|h]' -exec dos2unix {} \; find $EXT_DIR/drivers/rf -name '*.[c|h]' -exec dos2unix {} \; find $EXT_DIR/drivers/temperature -name '*.[c|h]' -exec dos2unix {} \; popd Afterwards, search through the `git diff` for the 'Zephyr' word in comments and reapply specific patches. The source file devices/cc13x2_cc26x2/startup_files/ccfg.c has been modified to use the appropriate sections when linking. TI provides the driver library functions burned into ROM at the factory, or updated via a service pack patch, thus saving application code space. After setting CONFIG_HAS_CC13X2_CC26X2_SDK=y in Kconfig, most of the peripheral driver library functions will be accessible from ROM. 2. CC32xx SDK The current version supported in Zephyr is the SimpleLink CC32xx SDK 4.10.00.07, downloaded from: http://www.ti.com/tool/download/simplelink-cc32xx-sdk Source files from select subdirectories are copied from the source/ti/ subdirectory of the SDK installation, as follows: EXT_DIR=$HOME/hal_ti/simplelink/source/ti find devices -not -path '*/\.*' -name '*.[c|h]' | \ cpio -pdm $EXT_DIR find drivers -name '*.[c|h]' | \ cpio -pdm $EXT_DIR find net -maxdepth 1 -name '*.[c|h]' | cpio -pdm $EXT_DIR cd $EXT_DIR find . -name '*.[c|h]' -exec chmod 664 {} \; find $EXT_DIR/devices/cc32xx -name '*.[c|h]' -exec dos2unix {} \; find $EXT_DIR/drivers -name '*.[c|h]' -exec dos2unix {} \; When updating to a new SDK, a comparison of the files in the 'devices' and 'drivers' directories as copied above should be performed to pick up any new changes. Header files in source/ti/drivers/dpl should also be compared, both to pick up new changes and to ensure any modifications that were previously made are kept in place after the update if appropriate. In addition, some files in the source/ti/drivers/net/wifi/porting directory may need to be updated: notably user.h, cc_pal.c and cc_pal.h. Files in kernel/zephyr/dpl copied verbatim from kernel/nortos/dpl in the SDK, such as QueueP.h, QueueP_nortos.c and SwiP_nortos.c, should be compared to see if new changes have been introduced. Note: TI provides the driver library functions burned into ROM at the factory, or updated via a service pack patch, thus saving application code space. Calling driverlib APIs prefixed by "MAP_" will vector to those functions already existing in ROM. After setting CONFIG_HAS_CC3220SDK=y in Kconfig, most of the peripheral driver library functions will be accessible from ROM, except for some functions in the following modules, which are compiled in the Kbuild file: - driverlib/pin.c - driverlib/utils.c - driverlib/prcm.c Setting CONFIG_SIMPLELINK_HOST_DRIVER=y builds the SimpleLink Host Driver, which communicates over dedicated SPI to the network coprocessor. 2. MSP432 SDK The current version supported in Zephyr is MSP432 SDK V1.50.00.12, downloaded from: http://www.ti.com/tool/simplelink-msp432-sdk Files in source/ti/devices/msp432p4xx/driverlib/ and inc/ are copied from a Linux SDK installation (without modification). TI provides the driver library functions burned into ROM at the factory, or updated via a service pack patch, thus saving application code space. Calling driverlib APIs prefixed by "MAP_" will vector to those functions already existing in ROM. After setting CONFIG_HAS_MSP432P4XXSDK=y in Kconfig, most of the peripheral driver library functions will be accessible from ROM.